Answer:
x=4x therefore the answer is 4x
Step-by-step explanation:
x^2-8x+16=0
315 peanuts/ 15 min= 21 peanuts/min.
Jack sells 21 peanuts in 1 minute.
Hope this helps~
Answer:
y = -(1/7)x + 1
Step-by-step explanation:

Answer:
The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.
Step-by-step explanation:
Answer:
51/60, 52/60
Step-by-step explanation:
20 and 15 are 5×2×2 and 5×3. The smallest common denominator would be 5×2×2×3=60.